Oxidation of Diorganopalladium (II) Complexes by Water and Halogens: Reactions Involving Methyl Group Transfer and Structural Studies of Hydrogen-Bonded Adducts Formed by Aryl Alcohols with the Pallada (IV) cyclopentane Complex Pd (CH2CH2CH2CH2) (OH) (pz) 3BH ( (pz) 3BH-= Tris (pyrazol-1-yl) borate)